Device for electric welding



Aug. 3, l943.- G, 1... COLLINS DEVICE FOR ELECTRIC WELDING Filed April 25, 1941' IKOR I ATTORNEY Patented Aug. 3,- 1943 UNITED v STATES PATENT OFFICE DEVICE FOR ELECTRIC WELDING Gilbert L. Collins, Birmingham, Ala.

Application April 23, 1941, Serial No. 389,831

3 Claims.

This invention relates to an electric arc welding device and has for its main object to produce an electric metal welder highly eificient, simple and cheap to manufacture. The device possesses other features of advantage and improvements as compared to other electric arc welders now in use as will appear from the description.

By referring to the drawing, part of this application, it will be observed that Fig. 1 is half elevational and half sectional view of the device; Fig. 2 is half plan and half sectional view; Fig. 3 is sectional elevation on line 3-3 of Fig. 4; Fig. 4 is sectional plan view on line 44 of Fig. 3.

Similar reference numerals refer to similar parts throughout the several views.

By again referring to the drawing it will be seen that I represents a container that is keg shaped but may be any other desired shape which is made of non-conducting material. Container I as shown by Fig. 1 is provided with electric source socket 4; modified form of container I as shown in Fig. 3 is provided with electric source sockets 4, I4, I5 and I6. Primary electric source wire 2 is disposed to connect in socket 4, or I4, or I5 or I 6, as desired for use. On the opposite side of the container there are outlet sockets 5, 6, I, 8, 9, I0, II, I2 and I3. Attached to sockets 4, 5, 6, I, 8, 9, It, II, I2, I3, I4, I5 and I6 are circle segment parts, preferably made of copper, I'I, I8, I9, 20, 2|, 22, 23,24, 25, 26,21, 28, 29 and 30. Fig. 3 shows a modification of the device in that the container I is provided with horizontal insulating partitions 3| having passageways 32. Container I is filled with salt water in proportions of about one and one half pounds of salt to each five gallons of water to level above all socket connections as indicated by 42. This salt and water mixture acts as the resistance, and takes the place of any other type of resistance coil in the device. The are welder which is standard is indicated by 38, the welding rod or material 39, the parts orpieces to be welded by 40 and 4|. The secondary source wire indicated by 34 does not connect to or pass through the container but around it and through switch connection 36 to wire 35 that is in contact with broken part 40. For average resistance the arc welder is plugged in at 30 with male part 3 on Fig. 1 and for less resistance at 3d with male part 3a and for more resistance at 3e with male part 3b. The resistance changes are indicated by 31a and 31b. Modification as shown by Fig, 3 is for the purpose of increasing resistance along the zigzag route indicated by arrows assuming the primary source wire is plugged in at 4 and the arc welder is plugged in at I3. Other plug combinations may be employed as desired by the operator depending the distance wanted between the source and the outlet as determined by the volume of salt water intervening. The change of plug connections in Fig. 3 are indicated by 310. and 31b. Because of the salt water becoming hot when in use it is necessary to provide the container with a. low pressure safety valve indicated by 33. The inlet for salt water is indicated by 43 and the level of the water is maintained above all socket connections which are water tight.

The device is very simple in operation and may be used on either direct or alternating electric current. Various shapes and sizes of tanks or containers may be used depending on work to be done. There is no coil to burn out in case of accident. All that can happen is for the water to get hot and pass out as steam till the water level falls below the outlet leading to the welding tool.

All the equipment and connections are standard for arc welding purposes except the container, the salt water and interior mechanism and parts comprising the container. The device is used in the regular way of arc welding practice which makes use of an electric current'with resistance to generate the desired heat. The present device makes use of salt water instead of a complicated coil.

The right is reserved to manufacture the device out of any material that is best suited for the purpose; and while I have shown the preferred embodiment of my invention I do not wish to limit myself to the precise and exact details of structure but reserve the right to make any and all modifications and changes so long as I remain within the spirit and scope of the following claims.

Having described my invention I claim:

1. An electric arc welding device comprising; a water tank made of electrical insulating material, water tight electric connecting sockets in two opposite walls of said tank, each of said sockets connected to a copper segment positioned inside of said tank, electric plug openings in each said sockets to accommodate electric plugs, said tank having a plurality of horizontal insulating partitions dividing the tank into a plurality of horizcntal compartments, each partition having a small aperture positioned the maximum distance out of line with apertures through other partitions to allow flow of water therethrough.

2. An electric arc Welding device comprising; a. fluid container made of electrical insulating material, fluid tight electric connecting sockets in two opposite walls of said container, each of said sockets connected to a copper segment positioned inside of said container, electric plug openings in each of said sockets to accommodate electric plugs, said container divided into a plurality of compartments by means of horizontal insulating partitions, each partition having a small aperture positioned the maximum distance out of line with apertures through other nearest partitionsito allow flow of fluid therethrough.

' 3. An electric arc welding devicecomprising7 a; fluid container madeofelectric'al insulating material, fluid tight electric connecting sockets in two opposed walls of said container, each of said' sockets connected to a copperseg men t positioned in close proximity to the inner surface of the wall of said container, electric plug-in openings in each of said sockets to accommodate electric plugs for inlet and outlet of electric current, said containerdivided into a plurality of compartments by means of horizontal insulating partitions in said container, each partition having a small aperture positioned the maximum distance out of line with apertures through other nearest partitionsto allow flowiof fluid theret'hrough; said segments being equal in number tosaid compart-,

ments with one segment in each compartment.

' GILBERT L. COLLINS. 

